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Large Format Laminating
Hi all,
Any advice on laminating. I print on our VP540 and laminate on GMP cold laminator.When we print long prints it is so hit and miss whether the print will crinkle as its going through. We have tried everything, come off flat table, print wound onto tube then fed into laminator sometimes work sometimes not
Any thoughts!!!
Cheers
Phil -
9 Replies
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my experience with this is the way the print is kept between printing and laminating.
must be 100% damp free and big roll not tightly rolled.
also total ink limit can play a part -
Had a bit of a wrestle with my cold laminator at first same things, a couple of things I found,
Don’t over pressure the rollers, tight isn’t always best,
Keep the rollers clean, I do this on a weekly basis,
Finally, always make sure the roller pressure is even and keep the print right in the middle of the rollers with a good tension in the laminate
Doesn’t always work, especially if some numpty distracts me when I’m doing it lol
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careful about tension on the laminate, too much and you may find the applied print trying to lift itself off as the laminate shrinks back, I dont know your laminator but positive pressure is usually undesirable, just the weight of the rollers should suffice.
also print and laminate should be aclimatised in the same room, and it does need to be warm.
Peter
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Use a leader board. Insert this first then put your print under the leader board jammed up against the bottom roller. I found this technique ensures that the sheet enter ting the laminator is always flat and won’t crinkle your media entertaing your laminator.
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Try running the print through then back again (without laminate) to check for tracking. If the edge moves across the roller doing this then it will wrinkle when applying the laminate.
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Thanks guys, thanks for all your posts on this, for some reason this has just started to happen. The width of the material is 1370 wide I am feeding through wonder if this has anything to do with it
Going to the thought of Jason’s if I attach a leader board underneath the material wouldnt it leave a line once laminated??
Peter Dee: I have tried that it doesnt tend to track over to one side but it still starts to crinkle up on the ends
Cheers Phil
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quote Phil Green:Hi all,
When we print long prints it is so hit and miss whether the print will crinkle as its going through. We have tried everything, come off flat table, print wound onto tube then fed into laminator sometimes work sometimes notI have this problem too!
Iv’e just wasted near on 4mtrs of print. All fine and dandy one minute then for no reason I can see, it gets half way through and print starts to crinkle up and gets ruinedMy laminator nearly went through the window today 👿
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I just done 30m today,
the reason why the print starts to crinkle is it is not running square, it needs to be "free" to move a little, if one side has a bit more tension coming of the roll. that is when it crinkles.
hard to explain but it is all about alignment. the print entering the rollers should have no tension at all.Peter
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quote Peter Normington:I just done 30m today,
the reason why the print starts to crinkle is it is not running square, it needs to be “free” to move a little, if one side has a bit more tension coming of the roll. that is when it crinkles.
hard to explain but it is all about alignment. the print entering the rollers should have no tension at all.Peter
Yep that all makes sense Pete, I’ll give you a call tomorrow to discuss.
Thanks
Martin
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